1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is (given 1 u = 931 MeV)
A
6.675 MeV
B
13.35 MeV
C
2.67 MeV
D
26.7 MeV
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is
A
$${7 \over {29}}$$
B
$${9 \over {31}}$$
C
$${5 \over {27}}$$
D
$${3 \over {23}}$$
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
The transition from the state n = 3 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from
A
2 $$ \to $$ 1
B
3 $$ \to $$ 2
C
4 $$ \to $$ 2
D
4 $$ \to $$ 3
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The half life of a radioactive nucleus is 50 days. The time invertal (t2 $$-$$ t1) between the time t2 when $${2 \over 3}$$ of it has decayed and the time t1 when $${1 \over 3}$$ of it had decayed is
A
30 days
B
50 days
C
60 days
D
15 days
NEET Subjects
EXAM MAP